The Blue Line is a popular open-air trolley route that winds along Oʻahu’s southeastern coastline. You’ll pass by key stops such as the Halona Blowhole lookout, scenic stretches of coastline, Koko Marina, Sea Life Park, Waikiki Aquarium, and more. The route is approximately 110 minutes for a full loop, with service intervals of about 40 minutes at each stop. Narration from local guides provides insight into cultural, natural, and community stories throughout the ride.